第 45 卷第 6 期Vol. 45 No. 6
2015 年 12 月Dec 2015

所属栏目:功能材料

复合型WO3-TiO2光催化材料的制备及性能研究
詹孝军,田 雄,童海霞,吴道新,彭三军 (长沙理工大学 化学与生物工程学院,湖南 长沙 410114)
摘 要:以钛酸丁酯为原料,采用低温水解法合成锐钛矿型TiO2纳米颗粒。采用浸渍法在TiO2表面复合WO3,将钨酸铵分解复合在TiO2表面,制得不同浓度WO3复合的TiO2粉体光催化剂WO3/TiO2 。并采用扫描电镜(SEM)、X射线衍射(XRD)、紫外可见漫反射(UV-Vis DRS)、荧光光谱(FS)等方法对其进行了表征。以WO3-TiO2为光催化剂,以高压Hg灯为光源,光降解含亚甲基蓝和甲基橙的废水,实验结果表明:WO3复合浓度为2%的WO3-TiO2光催化剂降解效果较好。
关键词:WO3/TiO2;光降解;亚甲基蓝;甲基橙
中图分类号:O643.36  文献标识码:A  文章编号:1009-9212(2015)06-0057-04
Preparation and Photocatalytic Properties of WO3/TiO2 Composites
ZHAN Xiao-jun, TIAN Xiong, TONG Hai-xia, WU Dao-xin, PENG San-jun (Institute of Chemical and Biological Engineering, Changsha University of Science & Technology, Changsha 410114, China)
Abstract:Anatase TiO2 nanoparticles were prepared using tetrabutyl titanate as raw material by low temperature hydrolysis method, and then the surface of TiO2 was impregnated with WO3 in nanostructures. In this impregnation method, ammonium wolframate was decomposed and compounded onto the surface of TiO2. The WO3-TiO2 composites were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis diffuse reflectance spectra (UV-Vis DRS), and the fluorescence spectrum (FS) and so on. Under the illumination of high pressure Hg lamp, WO3-TiO2 was tested as photocatalysts for the photo-degradation of methylene blue and methyl orange waste water. The experimental results indicated that the optimum loading of WO3 in the composites was 2%.
Key words:WO3/TiO2; photo-degradation; methylene blue; methyl orange
基金项目:湖南省教育厅科学研究项目(0115003)。
作者简介:詹孝军(1991-),男,湖南衡阳人,硕士,研究方向:无机功能材料(E-mail:472687154@qq.com)。
联 系 人: 童海霞,副教授。研究方向:无机功能材料(E-mail:tonghaixia@126.com)。
收稿日期:2015-11-20